AT&T Finally Releases Android Marshmallow For The Galaxy S6
Galaxy S6 users on AT&T, your day should be a little better now. After months of delays and every carrier in the US other than AT&T releasing the update, you can now get the Android Marshmallow update for your device. The update came from Samsung, not AT&T, as they updated their support page for the device. The new build you are looking for on your device is G920AUCU3CPC2 and it is a healthy 1+GB download so you will need to get it while you are on Wi-Fi and expect a 20-30 minute update process once you do have it. Once you get it installed, you will have Marshmallow 6.0.1 and the March security update on your device.